Greg Earle writes:
Is there any chance of implementing a MAXPERUID variable of some sort, to limit the total number of running "imapd" processes under a particular uid?
This is a system function. On Linux, this can be set with 'ulimit -u'. Note that this affects all non-root processes, so it is going to apply to all non-root processes. ulimit -u needs to be set in the script that runs Courier-IMAP's startup script.
Note that a separate process, couriertls, exists in encrypted connections, so a ulimit of 10 processes may actually permit a maximum of 5 encrypted connections at the same time.
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